<template>
  <div class="app-container">
    <el-row :gutter="10">
      <el-col :span="24" :xs="24">
        <!-- 数据筛选表单 -->
        <el-form ref="queryForm" :model="queryParams" :inline="true" label-width="100px">
          <!-- 数据筛选表单组件 -->
          <el-form-item label="用户名" prop="username">
            <el-input v-model="queryParams.username" placeholder="请输入用户名" clearable size="small" @keyup.enter.native="handleQuery" />
          </el-form-item>
          <el-form-item label="状态" prop="status">
            <el-select v-model="queryParams.status" size="small" placeholder="请选择">
              <el-option v-for="item in statusOptions" :key="item.value" :label="item.label" :value="item.value" />
            </el-select>
          </el-form-item>

          <!-- 数据筛选操作按钮 -->
          <el-form-item>
            <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索
            </el-button>
            <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置
            </el-button>
          </el-form-item>
        </el-form>

        <!-- 数据操作按钮 -->
        <el-row :gutter="20">
          <el-col :span="3">
            <el-button type="primary" icon="el-icon-plus" size="small" @click="handleAdd">新增用户
            </el-button>
          </el-col>
        </el-row>

        <!-- 数据表格 -->
        <el-table v-loading="loading" :data="userList">
          <!-- 数据表格列 -->
          <el-table-column label="用户ID" align="center" prop="userId" />
          <el-table-column label="用户名称" align="center" prop="userName" />
          <el-table-column label="用户昵称" align="center" prop="nickName" />
          <el-table-column label="状态" align="center" prop="status">
            <template slot-scope="scope">
              <el-tag v-if="scope.row.status === '0'" size="small" type="success">正常</el-tag>
              <el-tag v-else-if="scope.row.status === '1'" size="small" type="danger">禁用</el-tag>
            </template>
          </el-table-column>
          <!-- 数据行操作按钮 -->
          <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
            <template slot-scope="scope">
              <el-button size="small" type="text" icon="el-icon-key" @click="handleRole(scope.row)">分配角色</el-button>
              <el-button size="small" type="text" icon="el-icon-edit" @click="handleUpdate(scope.row)">修改
              </el-button>
              <el-button size="small" type="text" icon="el-icon-delete" @click="handleDelete(scope.row)">删除
              </el-button>
            </template>
          </el-table-column>
        </el-table>
        <!-- 数据分页加载 -->
        <el-pagination
          :current-page="pageNum"
          :page-sizes="[5, 10, 50, 100]"
          :page-size="pageSize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total"
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          @pagination="getList"
        />
      </el-col>
    </el-row>
    <!-- 添加修改user对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="120px">
        <!-- 数据编辑表单组件 -->
        <el-form-item label="用户名称" prop="userName">
          <el-input v-model="form.userName" placeholder="请输入用户名" />
        </el-form-item>
        <el-form-item label="用户昵称" prop="nickName">
          <el-input v-model="form.nickName" placeholder="请输入昵称" />
        </el-form-item>
      </el-form>
      <!-- 数据提交操作按钮 -->
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>

    <!-- 分配权限对话框 -->
    <el-dialog :title="roleTitle" :visible.sync="roleDialogFormVisible" width="300px">
      <el-form :model="roleForm">
        <el-tree ref="roleTree" :data="roleTreeData" show-checkbox :check-strictly="checkStrictly" node-key="roleId" :default-expand-all="true" :props="defaultProps" />
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="roleDialogFormVisible = false">取 消</el-button>
        <el-button type="primary" @click="submitAuthRole">确 定</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
/** 导入axios Api */
import { listUserByPage, getUser, addUser, updateUser, deleteUser, authRole } from '@/api/user'
import { listAllRole } from '@/api/role'
export default {
  name: 'User',
  data() {
    return {
      // 状态类型
      statusOptions: [
        {
          value: '0',
          label: '正常'
        },
        {
          value: '1',
          label: '禁用'
        }
      ],
      // User类型
      typeOptions: undefined,
      // 遮罩层
      loading: false,
      // 总条数
      total: 0,
      // 当前页
      pageNum: 0,
      // 每页数据量
      pageSize: 0,
      // User表格数据
      userList: [],
      // 弹出层标题
      title: '',
      // 是否显示弹出层
      open: false,
      // 数据查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 5,
        username: null,
        status: null
      },
      // 数据编辑表单
      form: {},
      // 表单数据校验规则
      rules: {
        userName: [
          { required: true, message: '用户名不能为空', trigger: 'blur' }
        ],
        nickName: [
          { required: true, message: '昵称不能为空', trigger: 'blur' }
        ]
      },
      roleDialogFormVisible: false,
      defaultProps: {
        label: 'roleKey'
      },
      roleForm: {},
      roleTreeData: [],
      checkStrictly: true,
      roleTitle: ''
    }
  },
  created() {
    this.getList()
  },
  methods: {
    /** 查询User数据列表 */
    getList() {
      this.loading = true
      listUserByPage(this.queryParams).then((response) => {
        this.userList = response.data.list
        this.total = response.data.total
        this.pageNum = this.queryParams.pageNum
        this.pageSize = this.queryParams.pageSize
        this.loading = false
      })
    },
    /** 处理分页 */
    handleSizeChange(val) {
      this.queryParams.pageSize = val
      this.getList()
    },
    handleCurrentChange(val) {
      this.queryParams.pageNum = val
      this.getList()
    },

    /** 数据编辑对话框取消按钮 */
    cancel() {
      this.open = false
      this.resetForm()
    },

    /** 数据编辑表单清空 */
    resetForm() {
      this.form = {
        userId: null,
        userName: null,
        nickName: null,
        status: '0'
      }
    },

    resetRoleForm() {
      this.roleForm = {
        userId: null,
        roleIds: []
      }
    },

    /** 数据筛选参数重置按钮 */
    resetQueryParams() {
      this.queryParams.pageNum = 1
      this.queryParams.pageSize = 5
    },

    /** 数据筛选搜索按钮 */
    handleQuery() {
      this.resetQueryParams()
      this.getList()
      this.$message.success('查询成功')
    },

    /** 数据筛选重置按钮 */
    resetQuery() {
      this.queryParams = {
        pageNum: 1,
        pageSize: 5,
        username: null,
        status: null
      }
      this.getList()
    },

    /** 新增按钮操作 */
    handleAdd() {
      this.resetForm()
      this.open = true
      this.title = '添加User'
    },

    /** 修改按钮操作 */
    handleUpdate(row) {
      this.resetForm()
      getUser(row.userId).then((response) => {
        this.form = response.data
        this.open = true
        this.title = '修改User'
      })
    },

    /** 数据提交按钮 */
    submitForm: function() {
      this.$refs['form'].validate((valid) => {
        if (valid) {
          if (this.form.userId === null) {
            addUser(this.form).then((response) => {
              this.$message.success(response.msg)
              this.open = false
              this.title = ''
              this.getList()
            })
          } else {
            updateUser(this.form).then((response) => {
              this.$message.success(response.msg)
              this.open = false
              this.title = ''
              this.getList()
            })
          }
        }
      })
    },

    /** 删除按钮操作 */
    handleDelete(row) {
      this.$confirm(
        '是否确认删除名称为"' + row.userName + '"的数据项?', '警告', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        })
        .then(function() {
          return deleteUser(row.userId)
        })
        .then(() => {
          this.getList()
          this.$message.success('删除成功')
        })
        .catch(() => {})
    },

    /** 处理分配角色 */
    handleRole(row) {
      this.roleForm.userId = row.userId
      this.roleTitle = '为用户[' + row.nickName + ']分配角色'
      this.roleDialogFormVisible = true
      listAllRole().then((response) => {
        this.roleTreeData = response.data
      })
      getUser(this.roleForm.userId).then((response) => {
        var roles = response.data.roles
        const roleIds = roles.map((item) => item.roleId)
        this.$refs.roleTree.setCheckedKeys(roleIds)
      })
    },
    /** 提交分配角色表单 */
    submitAuthRole() {
      this.roleForm.roleIds = this.$refs.roleTree.getCheckedKeys()
      authRole(this.roleForm).then((response) => {
        this.$message.success(response.msg)
        this.roleDialogFormVisible = false
        this.resetRoleForm()
      })
    }
  }
}
</script>
